Rothoblaas - Wood screws and connectors Page 68
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Fastening SIP panels with 8 mm diameter TBS screws. Fastening CLT walls with 8 mm diameter TBS screws. GEOMETRY AND MECHANICAL CHARACTERISTICS A dK d2 d1 dS b Ø6 - Ø8 L Ø8 MAX Ø10 Nominal diameter d1 [mm] 6 8 8 MAX 10 Head diameter dK [mm] 15,50 19,00 24,50 25,00 Tip diameter d2 [mm] 3,95 5,40 5,40 6,40 Shank diameter dS [mm] 4,30 5,80 5,80 7,00 Pre-drilling hole diameter(1) dV [mm] 4,0 5,0 5,0 6,0 Characteristic yield moment Characteristic withdrawal-resistance parameter(2) My,k [Nm] 9,5 20,1 20,1 35,8 fax,k [N/mm2] 11,7 11,7 11,7 11,7 Associated density ρa [kg/m3] 350 350 350 350 Characteristic withdrawal-resistance parameter(3) fax,k [N/mm2] 15 15 15 15 Associated density ρa [kg/m3] 500 500 500 500 Characteristic head-pull-through parameter(2) fhead,k [N/mm2] 10,5 10,5 15,0 10,5 Associated density ρa [kg/m3] 350 350 350 350 Characteristic head-pull-through parameter(3) fhead,k [N/mm2] 20 20 20 20 Associated density ρa [kg/m3] 500 500 500 500 Characteristic tensile strength ftens,k [kN] 11,3 20,1 20,1 31,4 (1) Pre-drilling valid for softwood. Valid for softwood - maximum density 440 kg/m3. (3) Valid for softwood LVL - maximum density 550 kg/m3 . For applications with different materials or with high density please see ETA-11/0030. (2) 68 | TBS | CARPENTRY
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